Finding the Fourth Proportional to 16,992.78, 23,450.70 and 9,439.69

Step by Step Solution

1. Step 1: Write the proportion equation
   16,992.78 : 23,450.70 = 9,439.69 : x
2. Step 2: Convert to fraction form
   16,992.78/23,450.70 = 9,439.69/x
3. Step 3: Cross multiply
   16,992.78x = 23,450.70 × 9,439.69
4. Step 4: Simplify right side
   16,992.78x = 221,367,173.83
5. Step 5: Solve for x
   x = 221,367,173.83/16,992.78
6. Step 6: Final answer
   x = 13,027.13